A CONTEMPORARY CONCEPT OF WATER STRUCTURE AND NEW AQUATIC THEORY OF WATER COLLOID-DISPERSED STABILITY SYSTEMS
DOI:
https://doi.org/10.20535/2218-93001922016122554Abstract
The modern chemical science appeared in dead spot because of inveterate hypotheses of free ions formation in aqueous solutions. Resistance of water colloidal dispersion systems was explained by the formation of the electrical double layer (EDL) on the surface of the dispersed phase due to spontaneous electrolytic dissociation of the molecules of dissolved substances into the ions (cations and anions) and interaction forces of molecular attraction (van der Waals forces) and electrostatic repulsion forces.
I believe that in an aqueous solution the substances dissolve to molecules and their spontaneous dissociation into ions doesn’t happen. Dissociation into ions occurs only in the case of chemical reactions. The impetus of the chemical reaction is to destroy the hydrogen bonding of water clusters and formation of highly active radicals and the compounds entering into the conjugate chemical reaction with dissolved gases and other substances. The transfer of electric charges in the aqueous solution is carried out by the mixed proton-electron conductivity, which occurs as a result of the spatial distribution of charges in the supramolecular structures.
During the investigation of colloid-dispersed systems it is necessary to take into account the flow of chemical interaction between the dispersed phase and the dispersion medium (water), especially the passage of conjugate chemical reactions between the products of dissociation of water clusters with dissolved substances.
As far as spontaneous dissociation of the compounds (including strong electrolytes) into ions in the aqueous solution doesn’t occur, therefore no EDL is formed on the surface of the colloid-dispersed particles.
As a result of interaction between the solid particle and clusters of water there is a formation of uncompensated positively charged oxonium ions and negative hydrated hydroxide ions (hydrated electrons) on the surface of solid particles, and electrostatic charges. The latter are formed as a result of Brownian motion of solid particles.
In the process of coagulant water purification aluminum sulphate stays in the form of dimers [Al2 (H2O) 24] (SO4) 3, has a charge of 6+ and hydrolyzes to form aluminum dihydroxylsulphate. The latter subsequently undergoes hydrolytic polymerization with formation of tetramers and ring structures of six-core complexes similar to mineral hydrargillite. The link between these structures is carried out by diol groups leading eventually to X-ray amorphous structures of hydrargillite aluminum.
In constructing the micellar structures - micelles (the first building blocks of colloid-dispersed phase) one should take into account the crystal structure of the substance resulting from the condensation process. The process of coagulation in aqueous colloid-disperse systems is physicochemical.
References
Список літератури:
Запольський А.К. Сучасні уявлення про структуру та електропровідність води. /
А.К. Запольський, К.Д. Першина, А.І. Герасимчук та ін. // Вода і водоочисні технології.
Науково-технічні вісті. — 2013. — № 3 (13). — С. 24—40.
Соловьев Ю.И. История учения о растворах / Ю.И. Соловьев // М.: Изд-во
АНСССР, 1959. — 582 с.
Запольский А.К. Электропроводимость водных растворов и электролитическая
диссоциация. / А.К. Запольский // Вода і водоочисні технології. Науково-технічні вісті. — 2014.
— № 1 (14). — С. 11—18.
Kurkal – Siebert V. / Kurkal – Siebert V., Daniel R.M., Finney Z.L., at al. // Z. Non —
Crystalline Solids. — 2006. — 352. — P. 4387—4393.
Hulthe G. / Hulthe G., Stenhagen G., Wennerstrum O., at al. // Z. Chromatogr., A. —
— 777. — P. 155—165.
Kakiuchi M. Distribution of isotopic water molecules, H2O, HDO and D2O, in vapor and
liquid phases in pure water and aqueous solution systems. / M. Kakiuchi // Geochim. Cosmochim.
Acta. — 2000. — 64. — P. 1485—1492.
Miyazaki., Fujii A., Ebata T. I. // Ibid. — 2004. — 304. — P. 1137—1140.
Фридрихсберг Д.А. Курс коллоидной химии. Учеб. для вузов. – 2-е изд., перераб. и
доп. / Д.А. Фридрихсберг. — Л.: Химия. — 1984. — 368 с.
Запольський А.К. Гідратаційна теорія стійкості водних колоїдно-дисперсних
систем. / А.К. Запольський // Вода і водоочисні технології. Науково-технічні вісті. — 2014. — №
(15). — С. 3—17.
Воюцкий С.С. Курс коллоидной химии. / С.С. Воюцкий. — М.: Химия, 1964. —
с.
Kazdobin K.A. Nature of the conductivity of kaolin under hydration and
mechanochemical activation. / K.A. Kazdobin, E.D. Pershina, V.V. Kokhanenko, L.N. Maslyuk, A.K.
Zapol’skii // Surface Engineering and Applied Electrochemistry. — 2014. — 50, N 1. — P. 95—100.
Каздобин К.А. Природа проводимости каолина в условиях гидратации и
механохимической активации. / К.А. Каздобин, Е.Д. Першина, В.В. Коханенко, Л.Н. Маслюк,
А.К. Запольский // Электронная обработка материалов. — 2014. — 50, № 1. — С. 94 – 99.
Запольський А.К. Гідратаційна теорія стійкості водних колоїдно-дисперсних систем.
/А.К. Запольський // Вода і водоочисні технології. Науково-технічні вісті. —2014. —№2(15). —
С.3-17.
Published
Issue
Section
License
Copyright (c) 2018 WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWSThe ownership of copyright remains with the Authors.
Authors may use their own material in other publications provided that the Journal is acknowledged as the original place of publication and National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” as the Publisher.
Authors are reminded that it is their responsibility to comply with copyright laws. It is essential to ensure that no part of the text or illustrations have appeared or are due to appear in other publications, without prior permission from the copyright holder.
WPT articles are published under Creative Commons licence:- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY-NC 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. The use of the material for commercial purposes is not permitted.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.